Dissertations, Academic (Ph.D) 423 History 156 Literature 135 Criticism and interpretation 109 Novel 109 Literature Malayalam 84 Philosophy 83 Proceedings of the society for experimental biology and medicine (Journal) 79 Thesis (Ph.D)-Chemistry 77 Biography 74 English literature 69 Thesis (Ph.D)-Hindi literature 59 English poetry 57 English fiction 54 Biochemistry 53 History and criticism 53 മലയാളം; മലയാളം നോവല്‍ 51 Criticism 50 Mathematics 50 Thesis (Ph.D)-English literature 48 Religion 46 Management 44 Social Sciences 44 Economics 43 Psychology 42 Fiction 40 Kerala 40 Drama 38 English 38 Poetry 36